The Lonely Assassin (Milan Thriller Series)

A Russian banker embezzles millions laundering money in Switzerland for Russian oligarchs. He flees with his Italian wife to a remote location on Lake Como near Milan, where their daughter lives.

Putin wants him dead and sends a GRU assassin to Milan to find and poison the banker.

But Milan's antiterrorism police, DIGOS, cannot locate the assassin, Vasily Egorov, who is traveling with phony documents, carrying a vial of Novichok poison, and speaking Italian. Unexpectedly, Egorov meets an intriguing Italian woman who probes into his emotional life. On a dangerous assignment, Egorov realizes he's an assassin in a deep personal crisis.